CN217009311U - Battery pack and bracket thereof - Google Patents
Battery pack and bracket thereof Download PDFInfo
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- CN217009311U CN217009311U CN202122396894.9U CN202122396894U CN217009311U CN 217009311 U CN217009311 U CN 217009311U CN 202122396894 U CN202122396894 U CN 202122396894U CN 217009311 U CN217009311 U CN 217009311U
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- heat dissipation
- battery pack
- battery
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Abstract
The utility model discloses a battery pack and a bracket thereof, wherein the battery pack comprises: a battery pack shell, a battery pack and a bracket, wherein the battery pack and the bracket are arranged in the battery pack shell, the battery pack comprises a plurality of battery units, the holder includes an accommodating portion configured to accommodate the battery cell and located between the battery cell and the heat dissipating portion, and a heat dissipating portion configured to dissipate heat generated by the battery cell, wherein the heat dissipation part includes a first region overlapping the battery cell and a second region staggered from the battery cell, the sum of the surface areas of the first heat dissipation units is larger than the sum of the surface areas of the second heat dissipation units, i.e., the effective heat dissipation area of the first region is larger, so that the heat dissipation performance of the first region is stronger than that of the second region, obviously, the region corresponding to the first region battery cell unit has a larger heat dissipation requirement, so that the improvement of the heat dissipation performance is benefited, and the service life of the battery pack is greatly prolonged.
Description
Technical Field
The utility model relates to the field of electric energy storage, in particular to a battery pack.
Background
Rechargeable battery packs are attracting attention as new energy sources for improving eco-friendliness and energy efficiency because fossil fuel use is significantly reduced and no by-products are generated during energy use. With the recent increase in the use as a storage energy source and the demand for large-capacity structures, the demand for secondary battery packs in which a plurality of secondary battery cells are connected in series and/or in parallel is increasing. Due to consumer demand, even small battery packs tend to have high output and high capacity.
The rechargeable battery pack is a power source of the wireless electric tool and has the electrical characteristic of high energy density. These tools use a plurality of unit cells, and therefore, it is common to package a plurality of unit cells into a battery pack, and then couple the battery pack with a tool or an instrument to mount the battery pack to the tool or the instrument. Due to the internal resistance of the rechargeable battery, heat is required to be emitted during charging and discharging. If the heat generated during the charge and discharge processes cannot be effectively removed, heat accumulation may occur and the battery cells exposed to a high-temperature environment for a long period of time may be more rapidly deteriorated, thereby rapidly reducing the life span of the secondary battery pack. Therefore, effective cooling techniques are required to increase the life characteristics of the secondary battery pack
SUMMERY OF THE UTILITY MODEL
The present invention has been made to solve the problems of the related art, and therefore, the present disclosure is directed to a battery pack having a heat dissipation bracket with improved heat dissipation efficiency
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:
in one aspect of the present disclosure, there is provided a battery pack including: the battery pack comprises a battery pack shell, a battery pack and a support, wherein the battery pack and the support are arranged in the battery pack shell, the battery pack comprises a plurality of battery units, the support comprises an accommodating part and a radiating part, the accommodating part is configured to accommodate the battery units and is positioned between the battery units and the radiating part, the radiating part is configured to guide out heat generated by the battery units, the radiating part comprises a first area overlapped with the battery units and a second area staggered with the battery units, the first area comprises a plurality of first radiating units, the second area comprises a plurality of second radiating units, the battery units are arranged along a first direction, the battery units are arranged along the first direction, the sum of the surface areas of the first radiating units is larger than the sum of the surface areas of the second radiating units, namely the effective radiating area of the first area is larger, therefore, the heat dissipation performance of the first area is stronger than that of the second area, and obviously, the area corresponding to the battery cell unit of the first area has a larger heat dissipation requirement, so that the service life of the battery pack is greatly prolonged due to the improvement of the heat dissipation performance.
The size of the first heat dissipation unit in the first direction is smaller than that of the second heat dissipation unit in the first direction.
The battery pack, wherein: the battery pack shell comprises a top wall, a bottom wall opposite to the top wall and a side wall connecting the top wall and the bottom wall, wherein a storage cavity for storing the battery pack and the support is defined by the top wall, the bottom wall and the side wall, the bottom wall comprises a hollow area facing the heat dissipation part, and the hollow area is provided with a plurality of heat conduction holes. The heat-conducting hole exposes at least a part of the heat-dissipating plate to the outside, so that heat generated from the cylindrical battery cell can be effectively dissipated to the outside, and the life of the secondary battery pack can be effectively prolonged.
The battery pack, wherein: a plurality of accommodating cavities are formed in the support, and each cylindrical battery unit is at least partially accommodated in the corresponding accommodating cavity. The battery unit is snugly received in the receiving cavity, and the cylindrical battery unit can be prevented from being overheated due to heat stagnation caused by air in the gap.
The battery pack, wherein: the first heat dissipation unit is of a fin-shaped structure, the fin-shaped structure increases the effective heat dissipation area, hot air can smoothly pass through the fin-shaped structure, and the heat dissipation efficiency is improved.
The battery pack, wherein: the bracket is made of metal, the heat conductivity coefficient is not lower than 50W/(m.K), for example, aluminum (the heat conductivity coefficient is 237W/(m.K)), copper and other metals, the accommodating part and the heat dissipation part are integrally formed, and heat transfer between the battery unit and the accommodating part and between the accommodating part and the heat dissipation part is facilitated.
The battery pack, wherein: the heat dissipation part faces the hollow area, and the area of the heat dissipation part is larger than that of the hollow area.
The battery pack, wherein: the radial dimension of the heat conduction hole is not more than 1cm at most, so that the heat dissipation effect can be ensured, and the scald caused by mistakenly touching the support by fingers of an operator in the use process can be prevented.
The battery pack, wherein: the heat dissipation part has an extension part extending outward to cover the receiving part.
Compared with the second region, the first region of the bracket of the battery pack has larger effective heat conducting area, is beneficial to improving the heat dissipation performance of the battery pack, and can effectively prolong the service life of the battery pack.
Drawings
FIG. 1 is an exploded view of a battery pack
FIG. 2 is an exploded view of the bracket
Fig. 3 is a bottom view of the battery pack
Wherein: 1. a top wall; 2. a switch section; 3. a battery pack; 31. a battery cell; 32. an electrode terminal; 4. a support; 41. an accommodating portion; 42. a heat dissipating section; A. a first region; B. a second region; a1, a first heat sink member; b1, a second heat sink member; 5. a bottom wall; 51. a side wall; 52. a hollowed-out area; 521, heat conduction holes.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the utility model and not as limiting the scope of the utility model. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example (b):
referring to fig. 1, fig. 1 is an exploded view of a battery pack, and includes a battery pack case, a battery pack 3 and a bracket 4, where the battery pack 3 is disposed in the battery pack case, the battery pack 3 includes a plurality of battery units 31, the bracket 4 includes an accommodating portion 41 and a heat dissipating portion 42, and preferably, the accommodating portion 41 and the heat dissipating portion 42 are integrally formed, so as to further improve heat conduction performance.
The accommodating portion 41 is configured to accommodate the battery cell 31 and is located between the battery cell 31 and the heat dissipating portion 42, and the heat dissipating portion 42 is configured to dissipate heat generated by the battery cell 31, wherein the heat dissipating portion 42 includes a first region a overlapping with the battery cell 31 (overlapping may be understood as overlapping in a projection of both on a plane, for example, on a plane perpendicular to the arrangement of batteries), and a second region B displaced from the battery cell, the first region a includes a plurality of first heat dissipating units a1, the second region B includes a plurality of second heat dissipating units B1, and the plurality of battery cells 31 are arranged in the first direction X.
Specifically, the battery cells 31 have a cylindrical shape, electrode terminals 32 are formed at both ends of each cylindrical battery cell, and a plurality of battery cells 31 are connected to a power management circuit in series and/or parallel to supply power to a power element (e.g., a motor).
In addition, the battery can body comprises a top wall 1, a bottom wall 5 opposite to the top wall and a side wall 51 connecting the top wall and the bottom wall, the top wall 1, the bottom wall 5 and the side wall 51 enclose a storage cavity for storing the battery pack 3 and the support 4, the bottom wall 5 comprises a hollow area 52 facing the heat dissipation part 42, the hollow area is provided with a plurality of heat conduction holes 521, and preferably, the radial dimension of the heat conduction holes is not more than 1cm at most.
As shown in fig. 2, fig. 2 is a diagram of a heat dissipation bracket, a dimension of the first heat dissipation unit a1 in the first direction X is smaller than a dimension of the second heat dissipation unit B1 in the first direction X, that is, a cross section of the first heat dissipation unit is smaller, and the first heat dissipation units are distributed more densely, which is beneficial to increasing an effective heat dissipation area; the sum of the surface areas of the first heat dissipation unit A1 is greater than the sum of the surface areas of the second heat dissipation unit B1; the size of the first area a in the first direction is larger than the size of the second area B in the first direction.
In addition, the holder 4 is internally formed with a plurality of receiving portions 41, and each cylindrical battery cell 31 is received in the corresponding receiving portion 41.
Specifically, the holder 4 is made of metal aluminum, and the accommodating portion 41 and the heat radiating portion 42 are integrally formed. The first heat dissipation unit a1 is a fin structure.
In addition, the heat dissipation part 42 faces the hollow area 52, and the area of the heat dissipation part 42 is larger than that of the hollow area 52. The radial dimension of the heat conducting hole 521 is not more than 1cm at most. The heat-conducting hole is used for heat conduction and also for preventing the user's finger from contacting the support with a high temperature, and the heat-dissipating part 42 has an extended portion that extends outward to cover the accommodating part 41.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The present disclosure relates to a battery pack including an aluminum heat dissipation bracket. Also, the present disclosure may be applied to industries associated with an electronic device or a power tool equipped with a battery pack.
Claims (10)
1. A battery pack is characterized by comprising a battery pack shell, a battery pack and a support, wherein the battery pack and the support are arranged in the battery pack shell, the battery pack comprises a plurality of battery units, the support comprises an accommodating part and a heat dissipation part, the accommodating part is configured to accommodate the battery units and is positioned between the battery units and the heat dissipation part, the heat dissipation part is configured to conduct heat generated by the battery units, the heat dissipation part comprises a first area overlapped with the battery units and a second area staggered with the battery units, the first area comprises a plurality of first heat dissipation units, the second area comprises a plurality of second heat dissipation units, the battery units are arranged along a first direction, and the sum of the surface areas of the first heat dissipation units is larger than the sum of the surface areas of the second heat dissipation units.
2. The battery pack according to claim 1, wherein: the size of the first heat dissipation unit in the first direction is smaller than that of the second heat dissipation unit in the first direction.
3. The battery pack according to claim 1, wherein: the battery pack shell comprises a top wall, a bottom wall opposite to the top wall and a side wall connecting the top wall and the bottom wall, the top wall, the bottom wall and the side wall form a containing cavity for containing the battery pack and the support, the bottom wall comprises a hollow-out area facing the heat dissipation part, and the hollow-out area is provided with a plurality of heat conduction holes.
4. The battery pack according to claim 3, wherein: a plurality of accommodating cavities are formed in the support, and each cylindrical battery unit is at least partially accommodated in the corresponding accommodating cavity.
5. The battery pack according to claim 1, wherein: the first heat dissipation unit is of a fin-shaped structure.
6. The battery pack according to claim 1, wherein: the support is made of metal, the heat conductivity coefficient of the metal is not lower than 50W/(m.K), and the accommodating part and the heat radiating part are integrally formed.
7. The battery pack according to claim 3, wherein: the heat dissipation part faces the hollow area, and the area of the heat dissipation part is larger than that of the hollow area.
8. The battery pack according to claim 3, wherein: the radial dimension of the heat conduction hole is not more than 1cm at most.
9. The battery pack according to claim 3, wherein: the heat dissipation part has an extension part extending outward to cover the receiving part.
10. A support is used for supporting battery units of a battery pack, and is characterized in that the support comprises an accommodating part and a heat dissipation part, the accommodating part is configured to accommodate the battery units and is located between the battery units and the heat dissipation part, the heat dissipation part is configured to conduct heat generated by the battery units, the heat dissipation part comprises a first area overlapped with the battery units and a second area staggered with the battery units, the first area comprises a plurality of first heat dissipation units, the second area comprises a plurality of second heat dissipation units, the battery units are arranged in a first direction, and the sum of the surface areas of the first heat dissipation units is larger than that of the second heat dissipation units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122396894.9U CN217009311U (en) | 2021-09-30 | 2021-09-30 | Battery pack and bracket thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122396894.9U CN217009311U (en) | 2021-09-30 | 2021-09-30 | Battery pack and bracket thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217009311U true CN217009311U (en) | 2022-07-19 |
Family
ID=82380598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122396894.9U Active CN217009311U (en) | 2021-09-30 | 2021-09-30 | Battery pack and bracket thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217009311U (en) |
-
2021
- 2021-09-30 CN CN202122396894.9U patent/CN217009311U/en active Active
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